Many parents are traveling this holiday season with small kids. Having movies, games or books on the tablet can save stress and ease boredom on a long car or plane ride. But what happens when the battery gets low or someone forgot to charge up before taking off?

To make sure you have portable power use the Justin Power Case, which is designed to fit any tablet (iPad, Android, Mini, Air, etc), and is capable of charging tablets, smartphones and other devices when there is no outlet in sight.

The Justin Power Case features a built-in 11,600 mAh rechargeable battery capable of charging a tablet twice or a smartphone upwards of seven times via a universal USB charging port.

It's available for $69.99 on Amazon, Walmart, Bed Bath & Beyond, RadioShack, Kohl's and many more retail outlets.